User:Star0/sandbox 7/styles.css

.btn {
      color: #0099CC; 
      background: transparent; 
      border: 2px solid #0099CC;
      border-radius: 6px; 
      border: none;
      color: white;
      padding: 3px 8px;
      margin:10px 0px;
      text-align: center;
      display: inline-block;
      font-size: 16px;
      margin: 4px 2px;
      transition-duration: 0.4s;
      cursor: pointer;
      text-decoration: none;
      text-transform: uppercase;
}
.btn1 {
      background-color: white; 
      color: black; 
      border: 2px solid #008CBA;
}
/* 悬停样式 */
.btn1:hover {
      background-color: #008CBA;
      color: white;
}