* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: #DCE775;
  font-family: 'Microsoft YaHei','Lantinghei SC','Open Sans',Arial,'Hiragino Sans GB','STHeiti','WenQuanYi Micro Hei','SimSun',sans-serif;

}

h1 {
  position: absolute;
  top: 20%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  padding: 1em;
  font-size: 2em;
  letter-spacing: .3em;
  color: #FFFFFF;
  text-align: center;
  border-top: 2px solid #E6EE9C;
  border-bottom: 2px solid #E6EE9C;
}

.contextmenu {
  display: none;
  position: absolute;
  width: 200px;
  margin: 0;
  padding: 0;
  background: #FFFFFF;
  border-radius: 5px;
  list-style: none;
  box-shadow:
    0 15px 35px rgba(50,50,90,0.1),
    0 5px 15px rgba(0,0,0,0.07);
  overflow: hidden;
  z-index: 999999;
}

.contextmenu li {
  border-left: 3px solid transparent;
  transition: ease .2s;
}

.contextmenu li a {
  display: block;
  padding: 10px;
  color: #B0BEC5;
  text-decoration: none;
  transition: ease .2s;
}

.contextmenu li:hover {
  background: #CE93D8;
  border-left: 3px solid #9C27B0;
}

.contextmenu li:hover a {
  color: #FFFFFF;
}