这是一个我认为非常好看的按钮，当做组件记录一下哈哈哈
以后有的话也会持续更新！
html部分：

<button class="button">连接相机</button>

css部分

.button {
  width: 130px;
  height: 40px;
  background: linear-gradient(to bottom, #4eb5e5 0%,#389ed5 100%); /* W3C */
  border: none;
  border-radius: 5px;
  position: relative;
  border-bottom: 4px solid #2b8bc6;
  color: #fbfbfb;
  font-weight: 600;
  font-family: 'Open Sans', sans-serif;
  text-shadow: 1px 1px 1px rgba(0,0,0,.4);
  font-size: 15px;
  text-align: left;
  text-indent: 5px;
  box-shadow: 0px 3px 0px 0px rgba(0,0,0,.2);
  cursor: pointer;

/* Just for presentation */  
  display: block;
  margin: 0 0 0 12px;
}
.button:active {
  box-shadow: 0px 2px 0px 0px rgba(0,0,0,.2);
  top: 1px;
}

.button:after {
  content: "";
  width: 0;
  height: 0;
  display: block;
  border-top: 20px solid #187dbc;
  border-bottom: 20px solid #187dbc;
  border-left: 16px solid transparent;
  border-right: 20px solid #187dbc;
  position: absolute;
  opacity: 0.6; 
  right: 0;
  top: 0;
  border-radius: 0 5px 5px 0;  
}

最后结果：