style.css

body {
    font-family:Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
    padding: 0px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center; 
    margin-top: 10%;
    background: #1b052f;
}

.maincontainer h1 {
    color:#1b052f;
    font-size: 45px;
    text-align: center;
}

form label {
    display: block;
    margin-bottom: 14px;
    margin-left: 40px;
    margin-top: 35px;
    color: #1b052f;
    font-size: 20px;
}
  
form input[type="text"] {
    width: 80%;
    padding: 10px;
    margin:auto;
    margin-left: 35px;
    border-radius: 12px;
    border:2px solid #ca8ffb;
    box-shadow: 0px 0px 11px 4px rgba(0, 0, 0, 0.25);
}
  
form button {
    background-color: #4e0e79;
    color: #cfa3ff;
    padding: 5px 10px;
    cursor: pointer;
    border-radius: 10px;
    font-size: 20px;
    margin-top: 20px;
}

form button:hover {
    border:2px solid #ca8ffb;
}
  
#short-url-container {
    margin-top: 20px;
}
  
#short-url-container p {
    margin-top: 40px;
    margin-bottom: 40px;
    margin-left: 40px;
    color: #1b052f;
    font-size: 20px;
}
  
#short-url {
    display: flex;
    box-sizing: border-box;
    margin-left: 40px;
}
  
#short-url a {
    word-wrap: break-word;
    margin-right: 10px;
    color: #1b052f;
    font-size: 18px;
}

.maincontainer {
    width:75%;
    height: auto;
    min-height:420px;
    padding: 10px;
    border-radius: 20px;
    box-shadow: 0px 0px 11px 4px rgba(36, 20, 59, 0.25);
    background: -webkit-linear-gradient(to right, #cc8ffb, #600f89);  
    background: linear-gradient(to right, #ce8ffb, #600f89);
    margin: auto;
}

.credit {
    height: 3vh;
    text-align: center;
    margin-top: 98px;
    font-size: 18px;
    font-family:'Times New Roman', Times, serif;
    color: #250d3c;
}