style.css

body{
    background-color: #7ba3c9;
}
input[type=text]
{
    background-color: white;
    width: 124%;
    height: 5vh;
    font-size: 18px;
    font-weight: bold;
    font-family:'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    border: none;
    border-radius: 10px;
    border: 1px solid #c3ced9;
    box-shadow: 5px 5px 8px lightslategray;
    margin-right:30px;
}
input[type=text]::placeholder{
    margin-right: 10px;
}
input[type=text]:focus
{
    outline: none;
}
button{
    background-color: white;
    width: 60px;
    height: 9vh;
    font-size: 20px;
    border-radius: 30px;
    border: 2px solid #7b96e0;
    box-shadow: 3px 4px 9px;
    margin: 2px;
    font-weight: bold;
    margin-left: 3px;
}
button:hover{
    background-color:#393a3b;
    color: white;
    box-shadow:3px 4px 9px white;
}
hr{
    width: 122%;
    margin: 7px;
    margin-left: 6px;
}
#equale,#clrs{
    background-color: #532fd6;
}
table{
    border: 4px solid white;
    padding: 16px;
    border-radius: 20px 0px 20px 0px;
    box-shadow: 8px 8px 40px white;
    margin: auto 0;
    margin-left: auto;
    margin-right: auto;
}
h4,h3{
    color: black;
    text-align: center;
    font-size: 20px;
}