遮罩mask的功能就是使用透明的圖片或漸變遮罩元素的背景。于是，遮罩mask與背景background非常類似，除了沒有color子屬性，背景background剩下的6個子屬性，mask都有 遮罩mask是一個復合屬性，包括mask-image、mask-mode、mask-repeat、mask-position、mask-clip、mask-origin、mask-size、mask-composite這8個屬性 注意: IE瀏覽器不支持，webkit內核的瀏覽器(包括chrome、safari、IOS、android)需要添加-webkit-前綴。要特別注意的是，firefox瀏覽器也支持webkit-mask屬性
【mask-image】
默認值為none，值為透明圖片，或透明漸變
【mask-repeat】
默認值為repeat，可選值與background-repeat相同
【mask-position】
默認值為0 0，可選值與background-position相同
【mask-clip】
默認值為border-box，可選值與background-clip相同
【mask-origin】
默認值為border-box，可選值與background-origin相同
【mask-size】
默認值為auto，可選值與background-size相同
【mask-mode】
默認值為match-source，可選值為alpha、luminance、match-source，或者它們的組合
【mask-composite】
默認值為add，可選值為add、subtract、intersect、exclude
[注意]只有firefox支持mask-mode和mask-composite
一，高斯模糊+mask遮罩
源碼
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <style> * { padding: 0; margin: 0; } html, body { height: 100vh; width: 100vw; } body { display: flex; justify-content: center; align-items: center; flex-direction: column; font-family: "Open Sans","PingFang SC","Microsoft YaHei","Helvetica Neue","Hiragino Sans GB","WenQuanYi Micro Hei",Arial,sans-serif; } @keyframes move { 0% { background-position: 0 0; } 50% { background-position: 100% 0; } } .bg { background: url(https://sp-webfront.skypixel.com/skypixel/v2/public/website/assets/1535027674204-f6eca6369ec03e70262b58b0e25cda7b.jpg); background-size: cover; position: fixed; top: -20px; left: -20px; right: -20px; bottom: -20px; filter: blur(15px); z-index: -1; } .mask { width: 340px; height: 196px; animation: move 40s infinite; background-image: url(https://sp-webfront.skypixel.com/skypixel/v2/public/website/assets/1535027674204-f6eca6369ec03e70262b58b0e25cda7b.jpg); background-size: cover; -webkit-mask: url(http://static.w3ctrain.com/upload_cae6fcb079f57792a47202cb67bbc04a-dji-seeklogo.com.svg); -webkit-mask-size: cover; } </style></head><body><div class="bg"></div><div class="mask"></div></body></html>二，窺見一點
源碼
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title> <style> .wrap{ position:absolute; width: 400px; border:1px solid black; } #mask{ height: 300px; background:url(http://sandbox.runjs.cn/uploads/rs/142/wat3wtnz/dongzhi.jpg) lightblue; -webkit-mask: url(http://sandbox.runjs.cn/uploads/rs/142/wat3wtnz/mask.png) no-repeat; animation: 2s maskPosition infinite alternate ; } #mask:hover{ animation: none; } @keyframes maskPosition{ 0%{-webkit-mask-position:0 0;} 100%{-webkit-mask-position:100% 100%;} } </style></head><body><div class="wrap"> <div id="mask"></div></div><script> var oBox = document.getElementById('mask'); oBox.onmousemove = function(e){ e = e || event; oBox.style.WebkitMaskPosition=(e.clientX-50)+"px "+ (e.clientY-50)+"px"; }</script></body></html>三，鏤空效果
源碼
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title> <style> * { box-sizing: border-box; padding: 0; margin: 0; } body { background-image: linear-gradient(-45deg, #8067B7, #EC87C0); min-height: calc(100vh - 40px); margin: 20px; font-family: 'Lato', sans-serif; display: flex; justify-content: center; align-items: center; } .wrapper { display: flex; flex-direction: column; align-items: center; } .mask { width: 288px; height: 176px; background: url(http://static.w3ctrain.com/upload_dc601fca016e97ec2575565e7f0dcfb2-mask2.svg); background-size: cover; } .ticket-mask { width: 288px; height: 176px; -webkit-mask: url(http://static.w3ctrain.com/upload_dc601fca016e97ec2575565e7f0dcfb2-mask2.svg); mask-size: cover; } .ticket { width: 288px; height: 176px; border-radius: 4px; overflow: hidden; background-image: linear-gradient(134deg, #3023AE 0%, #C86DD7 100%); } .info { height: 120px; background: url(http://static.w3ctrain.com/upload_9c0746a7eb377f304e733edc1effdb40-cover.jpeg); padding: 24px 16px; color: white; } h3 { font-size: 24px; line-height: 32px; } p { margin: 16px 0 0 0; } button { background: transparent; appearance: none; display: flex; border: none; height: 56px; justify-content: center; align-items: center; width: 100%; font-size: 14px; color: white; outline: none; } .symbol { color: white; font-size: 64px; margin: 16px 40px; } .addend { display: flex; align-items: center; } @media (max-width: 800px) { flex-direction: column ; } </style></head><body><div class="wrapper"> <div class="addend"> <div class="ticket"> <div class="info"> <h3>打骨折</h3> <p>專治各種不服</p> </div> <button> 買買買 </button> </div> <span class="symbol">+</span> <div class="mask"></div> </div> <span class="symbol">=</span> <div class="ticket-mask"> <div class="ticket"> <div class="info"> <h3>打骨折</h3> <p>專治各種不服</p> </div> <button> 買買買 </button> </div> </div></div></body></html>以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
新聞熱點
疑難解答
