body {
    background-image: url("../../../contents/img/skypeback.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

p {
    color: white;
    font-weight: 300;
    font-size: small;
}

.container-interface-header {
    font-family: "Source Sans Pro", sans-serif;
}

.container-interface-header > .interface-time {
    letter-spacing: 4px;
    font-size: 4.5rem;
}

.container-interface-body {
    font-family: "Liquid Crystal", sans-serif;
    letter-spacing: 3px;
}

.container-interface-footer > .btn-interface-submit {
    font-family: "Source Sans Pro", sans-serif;
}

.btn-interface-submit {
    background-color: var(--ouverture-green-color);
    color: white;
    letter-spacing: 3px;
}

@keyframes shake {
    0% { transform: translate(0, 0) rotate(0); }
    10%, 30%, 50%, 70%, 90% { transform: translate(-5px, 0) rotate(-5deg); }
    20%, 40%, 60%, 80% { transform: translate(5px, 0) rotate(5deg); }
    100% { transform: translate(0, 0) rotate(0); }
  }
  
  .shake {
    animation: shake 1s infinite;
  }