@import url('https://fonts.googleapis.com/css2?family=Dancing+Script:wght@400..700&display=swap');
body {
    background-image: url("https://upload.wikimedia.org/wikipedia/commons/4/4f/Marie-Guillemine_Benoist_-_Portrait_of_a_Negress_-_WGA01885.jpg");
    font-family: "Dancing Script", cursive;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: italic;
}
.go-top-btn {
    position: fixed;
    bottom: 35px;
    right: 35px;
    border-radius: 50%;
    cursor: pointer;
    height: 100px;
    background: #fff;
    border: 3px solid #333;
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1;
}

.go-top-btn img {
    width: 50px;
    height: 50px;
}
a.btn.btn-success:hover {
    background:  blue;
}
.w-50 {
    width: 50%;
    height: 50%;
    margin-left: auto;
    margin-right: auto;
}

/* This only changes this particular animation duration */
.animate__animated.animate__bounce {
    --animate-duration: 5s;
  }
  
  /* This changes all the animations globally */
  :root {
    --animate-duration: 800ms;
    --animate-delay: 0.9s;
  }