style.css

body,html {
    height: 100%;
    width: 100%;
    margin: 0;
    background-color: rgb(30,20,30);
/*    background: linear-gradient(to left,orange, yellow, orange);*/
/*    background: linear-gradient(to left,#0F000F, grey, #0F000F);*/
/*    font-family: sans-serif;*/
}

#container{
    position: fixed;
    height: 100%;
    width: 35%;
    left: 35%;
    top: 0;
/*    background-color: #292929;*/
    overflow: hidden;
    background: linear-gradient(to left, black,#292b30, black);
  
}
.line{
    position: absolute;
    height: 150px;
    width: 4%;
    margin-left: 48%; 
    background-color: rgba(255,255,255,0.5);
}
#line_1{
    top: -150px;
}
#line_2{
    top: 150px;
}
#line_3{
    top: 450px;
}
.car{
    position: absolute;
    height: 60px;
    width: 40px;
    border-radius: 5px;
    box-shadow: 0px 1px 8px 0px black;
}
#car{
    bottom: 8%;
    left: 60%;
    background-color: tomato;
}
.f_glass{
    position: absolute;
    height: 20%;
    width: 60%;
    margin-left: 20%;
    top: 15%;
    border-radius: 0px 0px 5px 5px;
    background-color: #484848;
}
.b_glass{
    position: absolute;
    height: 20%;
    width: 60%;
    margin-left: 20%;
    bottom: 15%;
    border-radius: 5px 5px 0px 0px;
    background-color: #484848;
}
.f_light_l{
    position: absolute;
    height: 10%;
    width: 20%;
    margin-left: 10%;
    top: -6%;
    border-radius: 5px 5px 0px 0px;
    background-color: #efefef;
}
.f_light_r{
    position: absolute;
    height: 10%;
    width: 20%;
    margin-left: 70%;
    top: -6%;
    border-radius: 5px 5px 0px 0px;
    background-color: #efefef;
}
.f_tyre_l{
    position: absolute;
    height: 20%;
    width: 10%;
    background-color: grey;
    top: 20%;
    left: -10%;
    border-radius: 5px 0px 0px 5px;
}
.f_tyre_r{
    position: absolute;
    height: 20%;
    width: 10%;
    background-color: grey;
    top: 20%;
    left: 100%;
    border-radius: 0px 5px 5px 0px;
}
.b_tyre_l{
    position: absolute;
    height: 20%;
    width: 10%;
    background-color: grey;
    top: 70%;
    left: -10%;
    border-radius: 5px 0px 0px 5px;
}
.b_tyre_r{
    position: absolute;
    height: 20%;
    width: 10%;
    background-color: grey;
    top: 70%;
    left: 100%;
    border-radius: 0px 5px 5px 0px;
}
#car_1{
    top: -100px;   
    left: 60%;
    background-color: #26c5ff;
}
#car_2{
    top: -200px;   
    left: 40%;
    background-color: #ffdf5a;
}
#car_3{
    top: -350px;   
    left: 50%;
    background-color: #26c5ff;
}
#car_4{
    top: -450px;   
    left: 20%;
    background-color: #ffdf5a;
}
#restart_div {
    position: absolute;
    height: 100%;
    width: 100%;
    background-color: #292929;
    color: white;
    font-family: sans-serif;
    font-size: 40px;
    text-align: center;
    display: none;
}

#restart {
    border: 1px solid white;
    padding: 25px;
    padding: 30px 60px;
    color: #292929;
    background-color: white;
    font-size: 30px;
    margin-top: 30%;
    height: 20%;
    width: 70%;
    transition: background-color 1s , color 1s , letter-spacing 1s;
}


#restart:hover {
    letter-spacing: 3px;
    background-color: #292929;
    border: 2px solid white;
    color: white;
    transition: background-color 1s , color 1s , letter-spacing 1s;
}

/*
#restart:hover {
    
    color: #292929;
    background-color: white;
    border: 2px solid white;
    
    transition: background-color 1s , color 1s , letter-spacing 1s;
}
*/

.small_text{
    font-size: 15px;
}
@font-face {
    font-family: digital-7;
    src: url(digital-7.ttf);
}
#score_div{
    position: absolute;
    width:245px;
    height:65px;
    margin-top: 10%;
    margin-left: 7%;
    font-size: 55px;
    font-family: digital-7;
/*    text-align: center*/
    background-color: white;
    color: rgb(30,20,30);
    padding: 30px 0px 20px 60px;
    box-shadow: 4px 4px 0px 1px #808080;
    border: 1px solid white;
}
 /*
#score_div:hover    {
    letter-spacing: 1px;
    position: absolute;
    width:245px;
    height:65px;
    margin-top: 10%;
    margin-left: 7%;
    font-size: 55px;
    font-family: digital-7;
/*    text-align: center*/
 /*   background-color: rgb(30,20,30);
    color: white;
    padding: 30px 0px 20px 60px;
    box-shadow: 4px 4px 0px 1px #808080;
    transition: background-color 1s , color 1s , letter-spacing 1s;
}*/
/*
#pause_div {
    position: absolute;
    margin-top: 25%;
    margin-left: 10%;
    font-size: 35px;
    background-color: white;
    color: #454545;
    padding: 10px;
    box-shadow: 4px 4px 0px 1px #808080;
    display: none;
}
*/
#pause {
    
    position: absolute;
    height: 10%;
    width: 15%;
    color: rgb(30,20,30);
    background-color:white;
    font-size: 25px;
    margin-top: 25%;
    left: 11%;
    border: 1px solid white;
    padding: 15px 32px;
    text-align: center;
    transition: background-color 1s , color 1s , letter-spacing 1s;
/*    box-shadow: 4px 4px 0px 1px #808080;*/
}

#pause:hover    {
    letter-spacing: 4px;
    position: absolute;
    color: white;
    background-color: rgb(30,20,30);
    font-size: 25px;
    margin-top: 25%;
    left: 11%;
    border: 1px solid white;
    padding: 15px 32px;
    text-align: center;
    transition: background-color 1s , color 1s , letter-spacing 1s; 

}


/*
#pause {
  border: 2px solid;
  box-shadow: inset 0 0 20px rgba(255, 255, 255, 0);
  outline: 1px solid;
  outline-color: rgba(255, 255, 255, .5);
  outline-offset: 0px;
  text-shadow: none;
  transition: all 1250ms cubic-bezier(0.19, 1, 0.22, 1);
} 

#pause:hover {
  border: 3px solid;
  box-shadow: inset 0 0 20px rgba(255, 255, 255, .5), 0 0 20px rgba(255, 255, 255, .2);
  outline-color: rgba(255, 255, 255, 0);
  outline-offset: 15px;
  text-shadow: 1px 1px 2px #427388; 
}
*/