.gradient {
width: 100%;
height: 100%;
position: fixed;
top: 0;
left: 0;
background: linear-gradient(to bottom, #0059ff, #8000ff);
animation: gradient 13s ease infinite;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
}

@keyframes gradient {
0% {
background-position: 00% 50%;
}
50% {
background-position: 100% 50%;
}
100% {
background-position: 00% 50%;
}
}

h1 {
font-size: 48px;
color: white;
text-align: center;
text-shadow: 10px 10px #333333;
margin-bottom: 50px;
}

h1 {
  font-size: 50px;
  color: white;
  text-align: center;
  text-shadow: 4px 4px #333333;
  margin-bottom: 100px;
  font-weight: bold;
}

.btn-group {
display: flex;
justify-content: center;
align-items: center;
}

.btn-group a {
background-color: rgba(0, 0, 0, 0.5);
color: #fff;
border: 1px solid #44aaaa;
border-radius: 5px;
font-size: 25px;
padding: 10px;
text-decoration: none;
transition-duration: 1s;
text-transform: uppercase;
margin: 5px;
display: inline-block;
}

.btn-group a.btn-1 {
animation: btn-1 1s ease infinite;
}

.btn-group a.btn-2 {
animation: btn-2 1s ease infinite;
}

.btn-group a.btn-3 {
animation: btn-2 1s ease infinite;
}

@keyframes btn-1 {
0% {
transform: translateY(0);
}
50% {
transform: translateY(-10px);
}
100% {
transform: translateY(0);
}
}

@keyframes btn-2 {
0% {
transform: translateY(0);
}
50% {
transform: translateY(-10px);
}
100% {
transform: translateY(0);
}
}

@keyframes btn-3 {
0% {
transform: translateY(0);
}
50% {
transform: translateY(-10px);
}
100% {
transform: translateY(0);
}
}

.btn-group a:hover {
background-color: #44aaaa;
color: #ffffff;
border: 1px solid #44aaaa;
}