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This article mainly introduces the relevant knowledge of css page layout case analysis, the content is detailed and easy to understand, the operation is simple and fast, and it has a certain reference value. I believe you will gain something after reading this css page layout case analysis article. Let's take a look at it.

Position:static

Ignore top/bottom/left/right or z-index

Position:relative

Elements that set relative positioning will not deviate from the document stream

Position:fixed

Will not scroll as the viewport scrolls, inheriting the characteristics of absolute

Position:sticky

When paired with the top attribute, you can set the adsorption navigation effect, but the compatibility is not ideal.

Demo * {margin:0;padding:0;} div {width:100%;} .banner {text-align: center;background-color:#f2f4f6;padding:100px 0;} .nav {text-align: center;border:1px solid # 333 control position: sticky;top:0;background-color:#abcdef;padding:20px 0;} .content {width:60%;margin:50px auto;} p {margin-bottom:50px;} this is advertising image navigation | Navigation | Navigation

Position:sticky is a new attribute of css positioning; it can be said to be the combination of relative positioning relative and fixed positioning fixed; it is mainly used to monitor scroll events; to put it simply, in the sliding process, when the distance between an element and its parent element meets the requirements of sticky viscous positioning (such as top:100px); the effect of position:sticky is equivalent to fixed positioning, fixed to the appropriate position.

Position:sticky is a new attribute of css positioning; it can be said to be the combination of relative positioning relative and fixed positioning fixed; it is mainly used to monitor scroll events; to put it simply, in the sliding process, when the distance between an element and its parent element meets the requirements of sticky viscous positioning (such as top:100px); the effect of position:sticky is equivalent to fixed positioning, fixed to the appropriate position.

Position:sticky is a new attribute of css positioning; it can be said to be the combination of relative positioning relative and fixed positioning fixed; it is mainly used to monitor scroll events; to put it simply, when the distance between an element and its parent element meets the requirements of sticky viscous positioning during sliding (such as top:100px); the effect of position:sticky is equivalent to fixed positioning and fixed to the appropriate position.

Position:sticky is a new attribute of css positioning; it can be said to be the combination of relative positioning relative and fixed positioning fixed; it is mainly used to monitor scroll events; to put it simply, in the sliding process, when the distance between an element and its parent element meets the requirements of sticky viscous positioning (such as top:100px); the effect of position:sticky is equivalent to fixed positioning, fixed to the appropriate position.

Position:sticky is a new attribute of css positioning; it can be said to be the combination of relative positioning relative and fixed positioning fixed; it is mainly used to monitor scroll events; to put it simply, when the distance between an element and its parent element meets the requirements of sticky viscous positioning during sliding (such as top:100px); the effect of position:sticky is equivalent to fixed positioning and fixed to the appropriate position.

Position:sticky is a new attribute of css positioning; it can be said to be the combination of relative positioning relative and fixed positioning fixed; it is mainly used to monitor scroll events; to put it simply, when the distance between an element and its parent element meets the requirements of sticky viscous positioning during sliding (such as top:100px); the effect of position:sticky is equivalent to fixed positioning and fixed to the appropriate position.

Position:sticky is a new attribute of css positioning; it can be said to be the combination of relative positioning relative and fixed positioning fixed; it is mainly used to monitor scroll events; to put it simply, when the distance between an element and its parent element meets the requirements of sticky viscous positioning during sliding (such as top:100px); the effect of position:sticky is equivalent to fixed positioning and fixed to the appropriate position.

Left fixed three-level navigation demo:

Demo * {margin:0;padding:0;} .page {width:100%;} .nav {position: fixed;top:50%;left:0;width:160px;height:205px;margin-top:-102.5px;}. Nav-li {width:100%;/*height:40px;*/line-height:40px;text-align:center;color:#fff;background:#333;border-bottom:1px solid # fff;cursor: pointer;}. Nav-li:hover ul {display: block } .title {width:100%;height:40px;} .nav-li ul {width:100%;background-color: # fff;display: none;}. Nav-li ul li {width:100%;height:40px;line-height:40px;text-align:center;color:#333;border-bottom:1px dashed # 666 position: relative;}. Nav-li ul li:hover .list3 {display: block;} .list3 {width:100%;position: absolute;top:0;left:160px;display: none } .item3 {width:100%;height:40px;line-height:40px;text-align:center;background:#444;color:#fff;border-bottom:1px dashed # 666 } first-level navigation 1 second-level navigation 1 third-level navigation 1 third-level navigation 2 third-level navigation 3 Three-level navigation 4 two-level navigation two-level navigation one three-level navigation two three-level navigation three-level navigation four Secondary navigation 2 three-level navigation 1 three-level navigation 2 three-level navigation 3 three-level navigation 4 Secondary navigation 2 three-level navigation 1 three-level navigation 2 three-level navigation 3 three-level navigation 4 First level navigation 1 second level navigation 1 third level navigation 1 third level navigation 2 third level navigation 3 third-level navigation 4 secondary navigation 2 secondary navigation 3 secondary navigation 4 primary navigation 1 Second-level navigation 1 three-level navigation one three-level navigation two three-level navigation three-level navigation four Secondary navigation 2 secondary navigation 3 secondary navigation 4 primary navigation 1 secondary navigation 1 tertiary navigation 1 three-level navigation 2 three-level navigation 3 three-level navigation 4 secondary navigation 2 secondary navigation 3 Secondary navigation 4 primary navigation 1 secondary navigation 1 tertiary navigation 1 tertiary navigation 2 tertiary navigation 3 Tertiary navigation 4 secondary navigation 2 secondary navigation 3 secondary navigation 4

Html+css web page project layout demo:

Demo * {margin:0;padding:0;} header {width:100%;height:100px;} header img {width:300px;height:85px;padding-left:100px;padding-top:8px;} .logo {float:left;} .nav {float:right;} .nav ul {padding-right:100px;} .nav ul li {float:left; list-style: none;width:80px;height:100px;line-height:100px;color:#333;} .main {position: relative } .top {width:100%;height:600px;} .top img {width:100%;height:100%;} .topLayer {width:100%;height:600px;position: absolute;background-color: # 000position opacity: .5Tracing topplan 0There left0;} .topLayer-top {width:500px;height:300px;position: absolute;top:280px;margin-top:-150px;z-index:2;left:50%;margin-left:-250px;} .word {padding-top:100px TopLayer-top button {width:200px;height:60px;margin-top:50px;color:#fff;background-color: # f5704f: bold;text-align: center;}. TopLayer-top button {width:200px;height:60px;margin-top:50px;color:#fff;background-color: # f5704f; topLayer-top button {background-color: # fff;color:#f5704f;border: 1px solid # f5704f; background-color: # fff;color:#f5704f;border: 1px solid # f5704f } .middle {width:1000px;margin:0 auto;} .common {float: left;width:33.3%;padding-top:50px;text-align: center;} .common img {width:100px;height:100px;} .com {font-size:20px;color:#7d7c7f;/*font-weight:bold;*/padding-top:20px;}. M-middle {font-size:22px;color:#e19796;font-weight:bold;padding-top:50px;font-style: italic;text-align: center Padding-bottom:50px;} .clear {clear:both;}. M-bottom {margin-bottom:20px;}. M-com {float: left;padding:10px;text-align: center;}. M-com img {width:310px;height:260px;} .des1 {font-size:20px;color:#7d7d7f;padding-top:20px;} .des2 {font-size:20px;color:#bdbdbc;padding-top:20px;} .bottom {background-color: # f9f9f9tpaddingMutom30px } .bottom .content {width:1000px;margin:0 auto;} .content .title {text-align: center;font-size: 20pxbetrotolution7d7c7f pic-content dd 50px 0 30px 0pic-content dd {width:470px;float: left;margin:10px 12px;} .pic-content dl img {width:470px;height:460px;} .title {padding-top:15px;font-size: 16pxcolorantor displacement 7d7c7f;} footer {width:100%;height:100px Background-color: # 292c35: colormistmistf: Font: Font: 15pxbot text: align: center;line-height:100px;}

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