.form-control:focus {
    box-shadow: none;
}
body {
    display: flex;
    justify-content: center;
   
   
    margin: 0;
}
#mainDiv {
    text-align: center;
}
.custom-input {
    background: linear-gradient(60deg, #f0f0f0, #c4c4c4);
    margin-bottom: 2px;
}
.email-input {
    background: linear-gradient(60deg, #f0f0f0f0, #c4c4c4);
    margin-bottom: 5px;
}
form {
    display: flex;
    flex-direction: column;
    align-items: center;
}