css icon

 转自：https://www.zhangxinxu.com/wordpress/2019/01/pure-css-shapes/

只摘了一个放大镜和锁子 

#magnifying-glass {
  font-size: 10em;
  display: inline-block;
  width: 0.4em; height: 0.4em;
  border: 0.1em solid red;
  position: relative;
  border-radius: 0.35em;
}
#magnifying-glass:before {
  content: "";
  display: inline-block;
  position: absolute;
  right: -0.25em; bottom: -0.1em;
  border-width: 0;
  background: red;
  width: 0.35em; height: 0.08em;
  transform: rotate(45deg);
}

#lock {
  font-size: 8px;
  position: relative;
  width: 18em; height: 13em;
  border-radius: 2em;
  top: 10em;
  box-sizing: border-box;
  border: 3.5em solid red;
  border-right-width: 7.5em;
  border-left-width: 7.5em;
  margin: 0 0 6rem 0;
}
#lock:before {
  content: "";
  box-sizing: border-box;
  position: absolute;
  border: 2.5em solid red;
  width: 14em; height: 12em;
  left: 50%;
  margin-left: -7em; top: -12em;
  border-top-left-radius: 7em;
  border-top-right-radius: 7em;
}
#lock:after {
  content: "";
  box-sizing: border-box;
  position: absolute;
  border: 1em solid red;
  width: 5em; height: 8em;
  border-radius: 2.5em;
  left: 50%; top: -1em;
  margin-left: -2.5em;
}