html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
	display: block;
}
body {
	line-height: 1;
}
ol, ul {
	list-style: none;
}
blockquote, q {
	quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
	content: '';
	content: none;
}
table {
	border-collapse: collapse;
	border-spacing: 0;
}

*{
    box-sizing: border-box;
}


body{
    background: url(../img/bg.jpg);
    color: #fff;
    font-size: 16px;
    font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";
}
.color-white{
    color: #fff;
}
a{
    text-decoration: none;
    color: #fff;
    display: block;
}
/* ========BTN====== */
.btn{
    text-align: center;
    background: #1f6fdf;
    border-radius: 5px;
}
.btn:hover{
    background: #0c58c2;
}
.btn-header{
    width: 20%;
    padding: 15px;
    margin: 50px auto;
}
.btn-instal{
    width: 100px;
    padding: 10px;
    margin: 20px 0 0 0;
}
/* ======BTN-END==== */

.container {
    width: 100%;
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 10px;
}

/* SECTION HEADER */
header{
    padding: 0 0 50px 0;
    height: 100vh;
}
.header__menu{
display: flex;
height: 80px;
    justify-content: space-around;
    align-items: center;
}
.logo .fa-rocketchat{
    color: #db2323;
    font-size: 22px;
}
.rokcet-chat{
    font-size: 20px;
    font-weight: bold;
}
.nav{
    display: flex;
    font-size: 18px;
    text-transform: capitalize;
}
.nav a{
    padding: 0 0 0 25px;
}
.nav a:hover{
    color: #a3b4cc;
}
.header__title{
    margin: 170px 0 0 0;
    text-align: center;
}
.header__title .title{
    font-size: 44px;
    font-weight: 700
}
.header__title .text{
    color: #a3b4cc;
    line-height: 1.4em;
    margin: 20px 0 0 0;
    font-size: 25px;
}
.arrow-down{
    text-align: center;
    font-size: 30px;
    margin: 90px 0 0 0;
}
.arrow-down .fa-angle-double-down{
    animation: animate 2s linear infinite;
    transition: 0.5s ease;
}
@keyframes animate{
    0%{
        transform: translateY(-20px);
        /* text-shadow: 0 25px 0 #ffffff; */
        transition: 0.5s ease;
    }
    20%{
        transform: translateY(-10px);
    }
     40%{
        transform: translateY(0px);
    }
    60%{
        transform: translateY(10px);
    } 
    100%{
        transform: translateY(10px);
    }
}
 

/* SECTION ==  Advantage */
.advantage{
   width: 100%;
   min-height: 500px; 
   background: #fff;
}
.headline{
    color: #000;
    text-align: center;
    padding: 40px 0 0 0;
}
.headline__title{
    font-size: 32px;
    font-weight: bold;
    margin: 0 0 15px 0;
}
.headline__text{
    font-size: 18px;
    color: #859bbb;
}
.advantage__wrapper{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    margin: 50px 0 0 0;
}

.block{
    color:  #859bbb; 
    max-width: 230px;
    text-align: center;
    line-height: 1.5em;
    margin: 0 30px 15px 0;
}
.block__icon{
    font-size: 40px;
    margin: 0 0 20px 0;
    color:  #1f6fdf;
}
.block__title{
    font-size: 18px;
    font-weight: 700;
    color: #000;
}
    /* Section---vidio */
.video{
    background: #fff;
    min-height: 600px
}
.rocket-video{
    margin: 50px 0;
    display: flex;
    justify-content: center;
}

/* Section---using */
.using{
    padding: 0 0 50px 0;
}
.using__content{
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
}
.platforms__text{
    max-width: 420px;
    line-height: 1.5em;
    color: #a3b4cc;

}
.platforms__icons{
    font-size: 30px;
    width: 250px;
    display: flex;
    justify-content: space-around;
    margin: 20px 0 0 0;
}
.platforms__icons i:hover{
    color: #859bbb;
}
.using__content img{
    max-width: 100%;
    height: 350px
}
/* ====FOOTER==== */
.footer{
    max-width: 100%;
    height: 100px;
    display: flex;
    justify-content: space-around;
    align-items: center;
}
.contact__title{
    text-align: center;
    color: #a3b4cc;
}
.contact__icons{
    display: flex;
}
.contact__block{
    width: 32px;
    height: 32px;
    background: #121f33;
    position: relative;
    border-radius: 5px;
    margin: 20px 0 0 15px;
}
.contact__block i{
    position: absolute;
    transform: translate(-50%,-50%);
    top: 50%;
    left: 50%;
    /* font-size: 20px; */
}
/* ===footer-end=== */
.top{
    width: 50px;
    height: 50px;
    background:  #1f6fdf;
    line-height: 50px;
    text-align: center;
    opacity: 1;
    transition: 1s ease;
    position: fixed;
    right: 30px;
    bottom: 15px;
    color: #ffffff;
    font-size: 24px;
    border-radius: 8px;
}
.top:hover{
    background:  #0c58c2;
}
.top.mPS2id-highlight{
    opacity: 0;
    transition: 1s ease;
  }