body{
    text-align: center;
    padding: 0;
    margin: 0;
    height: 100%;
    overflow: hidden;
    font-size: 30pt;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
}

.img-bg {
    /* Set rules to fill background */
    display: absolute;
    z-index: 2;
    min-height: 100%;
    min-width: 1024px;

    /* Set up proportionate scaling */
    width: 100%;
    height: auto;

    /* Set up positioning */
    position: fixed;
    top: 0;
    left: 0;
    }
.title{
    display: inline-block;
    color: aliceblue;
    font-size: 60px;
    z-index: 99;
    position: relative;


}

#form-login {
    color :white;
    font-size: medium;
    font-weight: bold;
    text-align: center;
}

    .start-btn{
    text-align: center;
    display: inline-block;
    margin:5px;
    font-size: large;
    font-weight: bold;
    padding: 10px 54px 10px 54px ;
    background-image: linear-gradient(to right, #2c3e50 0%, #3498db  51%, #2c3e50  100%);
    background-size: 200% auto;
    /* glow */
    box-shadow: 0 0 60px rgb(130, 166, 255); 
    transition: 0.5s;
    background-color: rgb(21, 66, 244);
    /* text-shadow: -1px -1px black, 1px 1px white; */
    color: rgb(226, 226, 226);
    -webkit-border-radius: 7px;
    -moz-border-radius: 7px;
    -o-border-radius: 7px;
    border-radius: 7px;
    /* box-shadow: 0 .2em gray;  */
    cursor: pointer;
    

}

.start-btn:hover {
background-position: right center; /* change the direction of the change here */
color: #fff;
text-decoration: none;
}

.video-game-button:active, .start-btn:active {
    box-shadow: none;
    position: relative;
    top: .2em;
}
.game-bg {
position: absolute;
z-index: 2;
top: 45%;
left: 50%;
transform: translate(-50%, -50%);
background-color: white;
}


#form-login {
position: absolute;
z-index: 2;
top: 80%;
left: 50%;
transform: translate(-50%, -50%);
}

.title2{ display: none;
}

.audio {
    display: none;
}


.tooltip {
  position: relative;
  display: inline-block;
  border-bottom: 1px dotted black;
}

.tooltip .tooltiptext {
  visibility: hidden;
  width: 120px;
  background-color: black;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 5px 0;
  position: absolute;
  z-index: 1;
  top: -5px;
  right: 110%;
}

.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 100%;
  margin-top: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: transparent transparent transparent black;
}
.tooltip:hover .tooltiptext {
  visibility: visible;
}

@media screen and (max-width: 600px) {

    .title{ display:none;
    }

.title2{
    display: block;
    font-size: 21px;
    color: white;
    position: absolute;
    text-align: center;
    z-index: 4;
    bottom: 0;
    left: 0;
    width: 100%;
    

}


#form-login {
    position: absolute;
    font-size: 18px;
    z-index: 3;
    /* top: 74%; */
    top: 15%;
    left: 50%;
    transform: translate(-50%, -50%);
    }
#username, #password{
    color:rgb(3, 3, 179);
    font-size: medium;
    font-weight: bold;
    padding: 2px 2px;
    background-color: white;
    border-radius: 7px;
    
}

.game-bg {
    position: absolute;
    z-index: 3;
    /* top: 28%; */
    top: 60% ;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    }




}