<div class="angle-wrapper"></div>
<style scoped>
.angle-wrapper {
width: 300px;
height: 200px;
position: relative;
background: rgb(148, 34, 34);
margin-left: 30px;
}
.angle-wrapper:before {
content: "";
width: 0;
height: 0;
border: 10px solid transparent;
border-right-color: rgb(148, 34, 34);
position: absolute;
right: 100%;
top: 50%;
margin-top: -20px;
}
</style>
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