}
body {
    margin: 0;
    font-family: Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
}

* {
    box-sizing: border-box;
}

.text {
    width: 960px;
    margin: 0 auto;
}

.mask {
  width: 100%;
  height: 100%;
  
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
  
  background-color: rgba(0, 0, 0, 0.8);
}

.modal {
  width: 800px;
  padding: 15px;
  margin-left: -400px;
  
  background-color: #fff;
  
  position: fixed;
  top: 75px;
  left: 50%;
  z-index: 1000;
}

.modal-close {
  width: 20px;
  height: 20px;
  
  background: none;
  border: 0;
  cursor: pointer;
  
  position: absolute;
  top: -20px;
  right: -20px;
}

.btn {
  display: inline-block;
  vertical-align: top;
  padding: 7px 15px;
  
  font-family: inherit;
  color: #fff;
  cursor: pointer;
  border: 0;
}

.btn.success {
  background-color: #35bb27;
}

.btn.cancel {
  background-color: #f9861f;
}