.form-control-lg {
    margin: 10px;
}
.col {
    margin: 0 auto;
}
.footer {
    position: relative;
    left: 0;
    bottom: -10vh;
    width: 100%;
    text-align: center;
}
h1 {
    text-align: center;
    margin-bottom: 30px;
}

h3, h4 {
    margin: 20px;
}

input {
    margin: 5px;
}
.btn-primary, .btn-secondary {
    margin: 10px;
}