style.css

@keyframes fade{
  0%{
    display: none;
    opacity: 0;
  }
  1%{
    display:unset;
    opacity: 0.01;
  }
  100%{
    opacity: 1;
  }
}
html {
  height: 100%;
  width: 100%;
  margin: 0% left;
  padding-left: 0%;
  background-image: url('https://idp.tasd7.net/adfs/portal/illustration/illustration.jpg');
}
#bar{
  position: absolute;
  top: 0px;
  right: 0px;
  width: 100%;
  height: 4%;
  background: linear-gradient(90deg, #ff00f07e, #0050ff7e);
  backdrop-filter: blur(3px);
  border-radius: 0px 0px 15px 15px;
  z-index: 100;
  box-shadow: 0px 1px 20px;
}
.barbtn{
  height: 100%;
  border: none;
}
button{
  border-radius: 15px;
  transition: all 250ms
}
button:hover{
  opacity: 0.5;
}
.winbox {
  background: linear-gradient(90deg, #ff00f07e, #0050ff7e);
  backdrop-filter: blur(3px);
  border-radius: 15px 15px 0 0;
  box-shadow: 0px 1px 20px;
}
.winbox.min{
  position: absolute;
  top:5px;
}
.hidden{
  animation-name: fade;
  animation-direction: reverse;
  animation-duration: 200ms;
  animation-fill-mode: forwards;
}
*{
  animation-name: fade;
  animation-duration: 200ms;
}
#menu{
  position: absolute;
  top: 5%;
  left: 0px;
  width: 15%;
  height: 15%;
  background: linear-gradient(90deg, #ff00f07e, #0050ff7e);
  backdrop-filter: blur(3px);
  border-radius: 15px 15px 15px 15px;
  z-index: 100;
  overflow: scroll;
  margin: left 10%;
  box-shadow: 0px 1px 20px;
  
}
.mitem{
  width: 100%;
  background-color: #00000000;
  border-radius: 0px;
  border-bottom: line;
  border-top: line;
  border-left: none;
  border-right: none;
  text-align: left;
}