css/style.css

.container { 
    max-width: 80%; 
    margin: auto;
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: 0.5rem;
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  margin-bottom: 0.5rem;
  font-weight: 500;
  line-height: 1.2;
}

h1, .h1 {
  font-size: 2.5rem;
}

h2, .h2 {
  font-size: 2rem;
}

h3, .h3 {
  font-size: 1.75rem;
}

h4, .h4 {
  font-size: 1.5rem;
}

h5, .h5 {
  font-size: 1.25rem;
}

h6, .h6 {
  font-size: 1rem;
}

.no-outline {
    border: 0px none;
}

.alert {
    position: relative;
    padding: 0.75rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: 0.25rem;
}

.alert-primary {
    color: #004085;
    background-color: #cce5ff;
    border-color: #b8daff;
}

.alert-secondary {
    color: #383d41;
    background-color: #e2e3e5;
    border-color: #d6d8db;
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}

.alert-warning {
    color: #856404;
    background-color: #fff3cd;
    border-color: #ffeeba;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

.alert-light {
    color: #818182;
    background-color: #fefefe;
    border-color: #fdfdfe;
}

.alert-dark {
    color: #1b1e21;
    background-color: #d6d8d9;
    border-color: #c6c8ca;
}

.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: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.25rem;
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

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

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

.btn-success {
    color: #fff;
    background-color: #28a745;
    border-color: #28a745;
}

.btn-info {
    color: #fff;
    background-color: #17a2b8;
    border-color: #17a2b8;
}

.btn-warning {
    color: #212529;
    background-color: #ffc107;
    border-color: #ffc107;
}

.btn-danger {
    color: #fff;
    background-color: #dc3545;
    border-color: #dc3545;
}

.btn-light {
    color: #212529;
    background-color: #f8f9fa;
    border-color: #f8f9fa;
}

.btn-dark {
    color: #fff;
    background-color: #343a40;
    border-color: #343a40;
}