CSS实现留言板效果【每日一题】

留言板将用于我们的许多项目。该设计的目的是收集目标用户的信息，以便我们能够及时链接用户，解决用户的问题，然后实现其功能和价值。

因此，今天我们练习实现一个简单的信息表，具体的效果，可以看到以下截图：

接下来，让我们来看看代码实现过程。建议初学者多练习。也许你认为你在做重复的事情，但我们只能在学习之前这样做。

HTML代码：

                                
       
         
           
             
联系方式
             
               
                                  地球-世界-中国-上海-闵行区-东川路               
               
                                  13127757553@163.com               
               
                                  13127757553               
             
           
           
             
             
             
             
             
           
         
         
           
留言联系
           
             
                              昵称             
             
                              姓名             
             
                              邮箱地址             
             
                              联系电话             
             
                              有问题请留言，我会尽快回复你             
             
                            
           
         
       
     
    

CSS代码：

 * {   margin: 0;   padding: 0;   box-sizing: border-box;   font-family: 'Poppins' ,sans-serif; } section {   position: relative;   display: flex;   justify-content: center;   align-items: center;   min-height: 100vh;   background: #112d42; } section::before {   content: '';   position: absolute;   top: 0;   left: 0;   width: 50%;   height: 100%;   background: #00a6bc; } section .container {   position: relative;   min-width: 1100px;   min-height: 550px;   display: flex;   z-index: 1000; } section .container .contactinfo {   position: absolute;   top: 40px;   width: 350px;   height: calc(100% - 80px);   background: #0f3959;   z-index: 1;   padding: 40px;   display: flex;   flex-direction: column;   justify-content: space-between;   box-shadow: 0 20px 20px rgba(0, 0, 0, 0.2); } section .container .contactinfo h2 {   color: #fff;   font-size: 24px;   font-weight: 500; } section .container .contactinfo .info {   position: relative;   margin: 20px 0; } section .container .contactinfo .info li {   position: relative;   list-style: none;   display: flex;   margin: 20px 0;   cursor: pointer;   align-items: flex-start; } section .container .contactinfo .info li span:nth-child(1) {   width: 30px;   min-width: 30px; } section .container .contactinfo .info li span:nth-child(1) img {   max-width: 100%;   filter: invert(1);   opacity: 0.5; }  section .container .contactinfo .info li span:nth-child(2) {   color: #fff;   margin-left: 10px;   font-weight: 300;   opacity: 0.5; } section .container .contactinfo .info li:hover span:nth-child(1) img, section .container .contactinfo .info li:hover span:nth-child(2){
  opacity: 1;
}
section .container .contactinfo .sci
{
  position: relative;
  display: flex;
}
section .container .contactinfo .sci li
{
  list-style: none;
  margin-right: 15px;
}
section .container .contactinfo .sci li a
{
  text-decoration: none;
}
section .container .contactinfo .sci li a img
{
  filter: invert(1);
  opacity: 0.5;
}
section .container .contactinfo .sci li:hover a img
{
  opacity: 1;
}
section .container .contactForm
{
  position: absolute;
  padding: 70px 50px;
  background: #fff;
  margin-left: 150px;
  padding-left: 250px;
  width: calc(100% - 150px);
  height: 100%;
  box-shadow: 0 50px 50px rgba(0,0,0,0.5);
}
section .container .contactForm h2
{
  color: #0f3959;
  font-size: 24px;
  font-weight: 500;
}
section .container .contactForm .formBox
{
  position: relative;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  padding-top: 30px;
}
section .container .contactForm .formBox .inputBox
{
  position: relative;
  margin: 0 0 35px 0;
}
section .container .contactForm .formBox .inputBox.w50
{
  width: 47%;
}
section .container .contactForm .formBox .inputBox.w100
{
  width: 100%;
}
section .container .contactForm .formBox .inputBox input,
section .container .contactForm .formBox .inputBox textarea
{
  width: 100% !important;
  padding: 5px 0;
  resize: none;
  font-size: 18px;
  font-weight: 300;
  color: #333;
  border: none;
  border-bottom: 1px solid #777;
  outline: none;
}
section .container .contactForm .formBox .inputBox textarea
{
  min-height: 120px;
}
section .container .contactForm .formBox .inputBox span
{
  position: absolute;
  left: 0;
  padding: 5px 0;
  font-size: 18px;
  font-weight: 300;
  color: #333;
  transition: 0.3s;
  pointer-events: none;
}
section .container .contactForm .formBox .inputBox input:focus ~ span,
section .container .contactForm .formBox .inputBox textarea:focus ~ span,
section .container .contactForm .formBox .inputBox input:valid ~ span,
section .container .contactForm .formBox .inputBox textarea:valid ~ span
{
  transform: translateY(-20px);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 1px;
  color: #ff568c;
}
section .container .contactForm .formBox .inputBox input[type="submit"]
{
  position: relative;
  cursor: pointer;
  background: #0f3959;
  color: #fff;
  border: none;
  max-width: 150px;
  padding: 12px;
}
section .container .contactForm .formBox .inputBox input[type="submit"]:hover
{
  background: #ff568c;
}

今天的【每日一练】的内容就先分享到这里，希望今天的小练习对你有用，如果你觉得有帮助的话，请点赞我，关注我