html, body{
    background-color: black;
    margin: 0;
    height: 100%;
    }
    .container-body{
        min-height: 100%;
        display: flex;
        flex-direction: column;
    }
    
    ul{
    
    padding: 60px;
    
    }
    button{
        width: 100px;
        background-color: rgb(171, 171, 182);
        border: 2px solid rgb(24, 139, 0);
        padding: 6px;
        position: relative;
        left: -30px;
        border-radius: 10px;
        cursor: pointer;
    
    
    }
    button:hover{
      background-color: aliceblue;
      border-radius: 20px;
    
    }
    a{
        margin: 5px;
    }
    li{
        display: flex;
        font-family: Arial, Helvetica, sans-serif;
        color: white;
        position: relative;
        left: 15px;
        top: -20px;
        
        
    }
    header{
        background-color: rgb(0, 0, 0);
        padding: 50px;
        height: 100%;
        width: 100%;
        
    }
    
    
    #estudantes {
        background-color: #0f55eb;
        padding: 20px;
      }
      
      .grid-container {
        display: grid;
        grid-template-columns: repeat(5, 1fr);
      }
      
      .grid-item {
        text-align: center;
      }
      
      .grid-item img {
        width: 70%;
        border-radius: 50%;
        border: 5px solid #6410a8;
        
      }
      .grid-item img:hover {
        transition: width 0,3s , border 0,3s;
        width: 80%;
        border: 5px solid #4b0a81;
        
      }

      .grid-item h3 {
        margin: 15px;
        font-size: 20px;
      }
      
      .grid-item p {
        margin: 15px;
        font-size: 14px;
      }
      
    footer{
        background-color: #000000;
        
        
    }
    footer ul{
        display: flex;
        justify-content: space-between;
        color: white;
    }