<!DOCTYPE html>
<html>
<head>
<style>
.circle-plus {
position: relative;
width: 50px;
height: 50px;
border-radius: 50%;
background-color: #3498db;
display: flex;
align-items: center;
justify-content: center;
}
.circle-plus::before, .circle-plus::after {
content: '';
position: absolute;
background-color: #fff;
}
.circle-plus::before {
width: 2px;
height: 20px;
top: 15px;
left: 24px;
}
.circle-plus::after {
width: 20px;
height: 2px;
top: 24px;
left: 15px;
}
</style>
</head>
<body>
<div class="circle-plus"></div>
</body>
</html>