.btn{
    width:100%;
}

h1{
    text-align: center;
}

img{
    margin-top: 30px;
    width:10%;
}

.container{
    margin-top: 60px;
}

.input-group{
    width:30%;
    max-width: 400px;
    margin-top: 30px;
}

.form-control{
    font-size: large;
    font-weight: 600;
}