style.css

.navbar {
    background-color: #181818;
    justify-content: space-between;
}
h1 {
    padding: 15px;
    font-size: 30px;
    color: white;
}
.btn{
    padding: 15px;
    font-size: 20px;
    background-color: black;
    border-radius: 30px;
    border: 1px solid black;
}
.form-control {
    padding: 30px;
    font-size: 20px;
    border: 1px solid black;
    border-radius: 30px;
    background-color: #c3c3bf;
}
.table
{
background-color: #c3c3bf;
font-weight: bold;
text-align: center;
font-size: 20px;
}
thead{
    background-color: #787575;
}
.delBtn{
    border-radius: 20px;
    border: 1px solid black;
    background-color: gray;
}
/* .......................................... */
@media only screen and (max-width: 768px) {
    .navbar {
        width: 930px;
    }
    .input-group {
       width: 470px;
    }
}