body {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.thank-you-card {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    max-width: 600px;
    width: 100%;
}

h1 {
    font-weight: 700;
    color: #343a40;
}

.lead {
    color: #495057;
}

hr {
    border-top: 1px solid #dee2e6;
}
img.vert-move {
    -webkit-animation: mover 1s infinite  alternate;
    animation: mover 1s infinite  alternate;
    max-height: 120px;
}
img.vert-move {
    -webkit-animation: mover 1s infinite  alternate;
    animation: mover 1s infinite  alternate;
}
@-webkit-keyframes mover {
    0% { transform: translateY(0); }
    100% { transform: translateY(-10px); }
}
@keyframes mover {
    0% { transform: translateY(0); }
    100% { transform: translateY(-10px); }
}
.developer {
    margin: 0;
    width: 100%;
    color: #eceff1;
}
.developer a {
    color: #edf0f2;
    text-decoration: none;
    font-weight: 400;
}