#particles {
    width: 100%;
    overflow: hidden;
    background: url(../../images/register/register-bg.jpg);
    background-size: 100% 100%;
    min-height: 400px;
}

.intro {
    position: absolute;
    left: 0;
    top: 45%;
    padding: 0 20px;
    width: 100%;
    text-align: center;
}

.intro h1 {
    text-transform: uppercase;
    font-size: 65px;
    font-weight: 700;
    letter-spacing: 0.015em;
    color: #fff;
}

.intro h1::after {
    content: '';
    width: 80px;
    display: block;
    background: #12aaeb;
    height: 5px;
    margin: 30px auto;
    line-height: 1.1;
}

.intro p {
    margin: 0 0 30px 0;
    font-size: 24px;
    color: #fff;
}

@media only screen and (max-width: 1000px) {
    h1 {
        font-size: 70px;
    }
}

@media only screen and (max-width: 800px) {
    h1 {
        font-size: 48px;
    }
    h1::after {
        height: 8px;
    }
}

@media only screen and (max-width: 568px) {
    .intro {
        padding: 0 10px;
    }
    h1 {
        font-size: 30px;
    }
    h1::after {
        height: 6px;
    }
    p {
        font-size: 18px;
    }
    .btn {
        font-size: 16px;
    }
}

@media only screen and (max-width: 320px) {
    h1 {
        font-size: 28px;
    }
    h1::after {
        height: 4px;
    }
}


/*media query*/

@media only screen and (min-width:1000px) and (max-width:1024px) {
    .intro {
        top:35%;
    }
}
@media only screen and (min-width:1920px) and (max-width:1900px) {
    .intro {
        top:25%;
    }
}


/*media query*/