*,
*::before,
*::after {
    box-sizing: border-box;
}

  body {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    margin:0px;
    background-color: #e6e6e6;
  }
  
  main {
    background-color: white;
    max-width: 480px;
    min-width: 350px;
    padding: 20px;
  }

  h2 {
    font-size: 1.8em;
  }

  a:link {
    text-decoration: none;
  }
  
  a:visited {
    text-decoration: none;
  }
  
  a:hover {
    text-decoration: none;
  }


   /*Main Page*/
    .form-horizontal{
        display: block;
        margin-bottom: 1rem;
    }

    .form-horizontal label {
        display: inline-block;
        margin-bottom: .5rem;
    }

    input ~ label{
        padding-left: 1em;
      }


    .form-control {
        display: block;
        width: 100%;
        height: calc(1.5em + .75rem + 2px);
        padding: .375rem .75rem;
        font-size: 1rem;
        font-weight: 400;
        line-height: 1.5;
        /* color: #495057; */
        background-color: #fff;
        background-clip: padding-box;
        border: 1px solid #ced4da;
        border-radius: .25rem;
        transition: border-color .15s ease-in-out,box-shadow .15s ease-in-out;
    }

    .form-control.is-invalid, .was-validated .form-control:invalid {
        border-color: #dc3545;
        padding-right: calc(1.5em + .75rem);
        background-image: url(/stamc/images/exclamation.svg);
        background-repeat: no-repeat;
        background-position: right calc(.375em + .1875rem) center;
        background-size: calc(.75em + .375rem) calc(.75em + .375rem);
    }

    .form-control:focus {
        color: #495057;
        /* background-color: #fff; */
        border-color: #80bdff;
        outline: 0;
        box-shadow: 0 0 0 0.2rem rgb(0 123 255 / 25%);
    }

    .btn {
        display: inline-block;
        font-weight: 400;
        color: #212529;
        text-align: center;
        vertical-align: middle;
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
        background-color: transparent;
        border: 1px solid transparent;
        padding: .375rem .75rem;
        font-size: 1rem;
        line-height: 1.5;
        border-radius: .25rem;
        transition: color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out;
    }

    .btn-primary {
        color: #fff;
        background-color: #007bff;
        border-color: #007bff;
    }

    .btn-primary:hover {
        color: #fff;
        background-color: #0069d9;
        border-color: #0062cc;
    }

    .btn-secondary {
        color: #fff;
        background-color: #6c757d;
        border-color: #6c757d;
    }

    .btn-secondary:hover {
        color: #fff;
        background-color: #5a6268;
        border-color: #545b62;
    }

    .btn:not(:disabled):not(.disabled) {
        cursor: pointer;
    }

    .alert-danger {
        color: #721c24;
        background-color: #f8d7da;
        border-color: #f5c6cb;
    }
    
    .alert {
        position: relative;
        padding: .75rem 1.25rem;
        margin-bottom: 1rem;
        border: 1px solid transparent;
        border-radius: .25rem;
    }
  



.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: .25rem;
    font-size: 80%;
    color: #dc3545;
}


.is-invalid~.invalid-feedback {
    display: block;
}

.form-control.is-invalid{
    border-color: #dc3545;
}

.flex-container {
    display: flex;
    flex-wrap: wrap;
    width: 100%;
}

.flex-container h2 {
    flex-grow: 1;
}

.flex-container img {
    width: 80px;
}


@media screen and (min-width: 480px) {
    body{
        margin-top: 2em;
    }

    main {
      margin: auto;
    }
  }