?> Background：:point_right: box-sizing, transform
<script v-pre type="text/x-template" id="polygon_tlp"> <style> main { width: 100%; padding: 60px 0; display: flex; justify-content: center; align-items: center; flex-wrap: wrap; } main > div.item { min-width: 199px; height: 200px; padding: 20px; border: 1px solid #f5f5f5; flex: 1; display: flex; justify-content: center; align-items: center; } main > div.item:not(:nth-child(3n)):not(:last-child) { border-right-width:0; } main .item > div { box-sizing: content-box; } .trapezoid { width: 80px; height: 0; border: 40px solid #fff; border-top: 0 solid; border-bottom: 80px solid #b4a078; } .star-5-points { width: 0; height: 0; position: relative; margin: 50px 0; border: 80px solid rgba(0,0,0,0); border-top: 0 solid; border-bottom: 56px solid #b4a078; transform: rotateZ(35deg); } .star-5-points::before { content: ""; width: 0; height: 0; position: absolute; top: -36px; left: -52px; border: 24px solid rgba(0,0,0,0); border-top: 0 solid; border-bottom: 64px solid #b4a078; transform: rotateZ(-35deg); } .star-5-points::after { content: ""; width: 0; height: 0; position: absolute; top: 3px; left: -86px; border: 80px solid rgba(0,0,0,0); border-top: 0 solid; border-bottom: 56px solid #b4a078; transform: rotateZ(-70deg); } .ribbon { width: 0; height: 80px; border: 40px solid #b4a078; border-top: 0 solid; border-bottom: 28px solid rgba(0,0,0,0); } .diamond { width: 50px; height: 0; position: relative; margin: 20px 0 82px; border: 25px solid rgba(0,0,0,0); border-top-width: 0; border-bottom-color: #b4a078; } .diamond::after { content: ""; width: 0; height: 0; position: absolute; top: 25px; left: -25px; border: 50px solid rgba(0,0,0,0); border-top: 70px solid #b4a078; border-bottom-width: 0; } .heart { content: ""; display: block; width: 100px; min-height: 80px; position: relative; transform-origin: 50% 50% 0; } .heart:before { content: ""; display: block; width: 50px; height: 80px; position: absolute; top: 0; left: 50px; border-radius: 50px 50px 0 0; background: #b4a078; transform: rotateZ(-45deg); transform-origin: 0 100% 0; } .heart:after { content: ""; display: block; width: 50px; height: 80px; position: absolute; top: 0; left: 0; border-radius: 50px 50px 0 0; background: #b4a078; transform: rotateZ(45deg); transform-origin: 100% 100% 0; } .army-chevron { width: 200px; height: 60px; position: relative; margin: 0 0 6px; padding: 12px; text-align: center; } .army-chevron::before { content: ""; width: 51%; height: 100%; position: absolute; top: 0; left: 0; background: #b4a078; transform: skewY(6deg); } .army-chevron::after { content: ""; width: 50%; height: 100%; position: absolute; top: 0; right: 0; background: #b4a078; transform: skewY(-6deg); } </style>*{ box-sizing: border-box; }
<script>
</script>
</script>
<iframe
width="100%"
height="436px"
frameborder="0"
src="https://caniuse.bitsofco.de/embed/index.html?feat=css3-boxsizing&periods=future_1,current,past_1,past_2,past_3&accessible-colours=false">
</iframe>
<iframe
width="100%"
height="480px"
frameborder="0"
src="https://caniuse.bitsofco.de/embed/index.html?feat=transforms3d&periods=future_1,current,past_1,past_2,past_3&accessible-colours=false">
</iframe>