body {
    background-color: rgb(37, 37, 37);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: block;
}

.copyright {

  color: #A2AAFF;
  text-align: center;

}

.working {
  position: relative;
  top: -15px;
  color: #A2AAFF;
  text-align: center;
}

.working a {
  color: inherit; 
  text-decoration: none; 
}

.working a:hover {
  text-decoration: underline; 
  color: #8a94ff; 

}

.logo {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 180px;
    height: auto;
    z-index: 1000;
}

.home {
    width: 855px;
    max-width: 90%;
    margin: 100px auto 40px auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.join {
    width: 355px;
    max-width: 85%;
    text-align: center;
    margin: -130px auto 30px auto;
    position: relative;
    top: -55px;
    z-index: 2;
}

.plus, .minus {
    width: 355px;
    max-width: 85%;
    text-align: left;
    margin: 0 0 30px 0;
}

.join img, .plus img, .minus img {
    max-width: 100%;
    height: auto;
    display: block;
}

.home img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

@media screen and (max-width: 768px) {
    .logo {
        width: 100px;
        top: 15px;
        left: 15px;
    }
    
    .home {
        margin-top: 80px;
        max-width: 95%;
    }
    
    .join, .plus, .minus {
        width: 300px;
    }
    
    .join {
        margin: -80px auto 30px auto;
        margin-left: auto;
        margin-right: auto;
    }
}

@media screen and (max-width: 480px) {
    .logo {
        width: 80px;
        top: 10px;
        left: 10px;
    }
    
    .home {
        margin-top: 60px;
        max-width: 98%;
    }
    
    .join, .plus, .minus {
        width: 280px;
    }
    
    .join {
        margin: -50px auto 30px auto;
        margin-left: auto;
        margin-right: auto;
    }
}