*{
    box-sizing: border-box;
}
img{
    width: 100%;
    height: auto;
}

body {
  font-family: 'Arial', sans-serif;
  text-align: center;
  height: 100vh;
  width: 100vw;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
#imgContainer{
    width: 70vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    opacity: 1;
    position: relative;
    transition: 300ms;
}

#imgContainer.hidden, .hidden{
    opacity: 0;
    position: absolute;
}

button {
    background-color: rgb(123, 32, 209);
    color: #fff;
    border-radius: 20px;
    margin: 5px;
    padding: 2rem 4rem;
    border: none;
    font-size: 16px;
    cursor: pointer;
    opacity: 1;
    position: relative;
    z-index: 3;

}