body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f8f8;
    color: #333;
  }

  header {
    background-color: #fff;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  }

  h1 {
    margin: 0;
    color: #555;
  }

  nav {
    margin-top: 20px;
    text-align: center;
  }

  nav a {
    text-decoration: none;
    color: #777;
    margin-right: 20px;
    transition: color 0.3s ease-in-out;
  }

  nav a:hover {
    color: #333;
  }

  section {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  }

  footer {
    text-align: center;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 -5px 10px rgba(0, 0, 0, 0.1);
  }
  a {
    text-decoration: none;
    color: #0097b2;}

    .contact {
        color: #555;
        text-decoration: none;
        background-image: linear-gradient(rgb(0,151,178),rgb(0,151,178)),linear-gradient(#555,#555);;
        background-size: 100% 2px,100% 2px;
        background-position: 100% 100%, 0 100%;
        background-repeat: no-repeat, no-repeat;
        transition: background-size 0.5s linear;
    }
    
    .contact:hover {
        background-size: 0 2px, 100% 2px;
        
    }
    nav ul {
        list-style: none;
        display: flex;
        justify-content: center;
        align-items: center;
        margin-top: 20px;
        text-align: center;
    }
    @media screen and (max-width: 990px) {
        nav ul {
            flex-direction: column;
            align-items: center;
        }
        nav li {
            margin: 10px 0;
        }}
    
    nav li {
        margin: 0 15px;
    }
    nav li:hover {
        color: rgb#777;
    }
    
    nav a {
        text-decoration: none;
        color: #555;
        transition: color 0.3s;
    }
    
    nav a:hover {
        transition-property: width;
        transition-duration: 1s;
        transition-timing-function: linear;
        color: rgb(0, 151, 178);
    }
    .button {
        display: inline-block;
        padding: 10px 20px;
        background-color: #fff;
        color: #555;
        text-decoration: none;
        border-radius: 5px;
        transition: background-color 0.3s;
    }
    
    .button:hover {
        background-color: #0097b2;
        color: #fff;
    }