body {
    font-family: 'Manrope', sans-serif;
    font-weight: 500;
    font-size: 20px;
    background-color: aliceblue;
    background-size: cover;
}
div {
    border: 0px green solid;
}
i {
    color: #fefefe;
}
img {
    max-height: 400px;
    width: 400px;
    margin: 75px 5px;
}
/*body {
  background: url('video.png');
}*/
h1, h2, h3, h4, h5, h6 {
    font-family: 'PT Sans Narrow', sans-serif;
    letter-spacing: 0.04em;
    font-weight: 700;
}
h1 {
    font-size: 96px;
    padding: 40 250px;
}    
h2 {
    font-size: 62px;
}
h3 {
    font-size: 48px;
}
h4 {
    font-size: 36px;
}
nav {
    background-color: #0f0f0f50;
    padding-bottom: 15px;
    padding-top: 15px;
}
nav a {
    color: #fefefe;
    margin: 5px 10px;
    text-decoration: none;
}
nav img {
    margin: auto 150px;
    height: 48px;
    width: 48px;
    text-align: left!important;
}
.course {
    font-family: 'Manrope', sans-serif;
    font-weight: 500;
}
li {
    text-align: left;
    font-size: 18px;
    padding: 3px 0;
}
span {
    font-family: 'PT Sans Narrow', sans-serif;
    letter-spacing: 0.06em;
}
.bg-general {
    position: relative;
}
.bg-grey {
    background-color: #f0f0f0;
}
.bg-video {
  position: fixed;
  right: 0;
  bottom: 0;
  /*min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;*/
  z-index: -9999;
}
.bg-head {
    position: absolute;
        top: 0px;
        bottom: 0px;
        left: 0px;
        right: 0px;
    background: rgb(239,239,239);
    background: linear-gradient(180deg, 
        rgba(83,82,82,0.60) 0%, 
        rgba(83,82,82,0.80) 100%);
    /*z-index: -1000;*/
}
.bg-study {
    background: url(../img/create_web_site.jpg);
    height: 30vh;
    background-size: cover;
}
.bg-php {
    background: url(../img/study.jpg);
    height: 30vh;
    background-size: cover;
}
.fl-study {
    position: absolute;
        top: 0px;
        bottom: 0px;
        left: 0px;
        right: 0px;
    background: rgb(239,239,239);
    background: linear-gradient(180deg, 
        rgba(83,82,82,0.60) 0%, 
        rgba(83,82,82,0.80) 100%);
}
.im-text {
    position: absolute;
        top: 27%;
        left: 0;
    color: #fefefe;        
}
.bg-study {
    position: relative;
    background-attachment: fixed;
}
.bg-php {
    position: relative;
    background-attachment: fixed;
}
.hd-text {
    position: absolute;
        top: 0; //5%
        bottom: 0;
        left: 0;
        right: 0;
    color: #fefefe;
    /*padding-top: 50px;*/
    z-index: 1;
}
.hd-study{
    position: absolute;
        bottom: 2%;
        left: 0;
        right: 0;
    color: #fefefe;
    font-size: 28px;
    font-weight: 600;
    /*padding-top: 50px;*/
    z-index: 1;
} 
.bg-work {
    float: none;
}
.bg-footer {
    height: 350px;
    background-color: black;
    color: #fefefe;
}
.ft-logo img {
    width: 200px;
    margin 50px auto;
}
video {
    width: 100%;
}
.text-right {
    text-align: right!important;
}
@media screen and (max-width: 1700px) {
    h1 {
        font-size: 80px;
    }
    h3 {
        font-size: 36px;
    }
    h4 {
        font-size: 32px;
    }
    .hd-study {
        font-size: 24px
    }
}
@media screen and (max-width: 1520px) {
    h1 {
        font-size: 60px;
    }
    h3 {
        font-size: 32px;
    }
    h4 {
        font-size: 28px;
    }
    .hd-study {
        font-size: 20px
    }
    img {
            width: 350px;
        }
    body {
        font-size: 18px;
    }
}
@media screen and (max-width: 1300px) {
    h1 {
        font-size: 48px;
    }
    h3 {
        font-size: 28px;
    }
    h4 {
        font-size: 24px;
    }
    .hd-study {
        font-size: 18px
    }
    body, li {
        font-size: 16px;
    }
}
@media screen and (max-width: 1200px) {
    h1 {
        font-size: 40px;
        padding: 10px 150px;
    }
    h3 {
        font-size: 24px;
    }
    h4 {
        font-size: 22px;
    }
    .hd-study {
        font-size: 18px
    }
    img {
        width: 300px;
    }
}
@media screen and (max-width: 995px) {
    img {
        width: 200px;
    }
}
@media screen and (max-width: 890px) {
    h1 {
        font-size: 36px;
        padding: 10px 50px;
    }
    h3 {
        font-size: 22px;
    }
    h4 {
        font-size: 20px;
    }
    .hd-study {
        font-size: 18px
    }
    body, li {
        font-size: 16px;
}
@media screen and (max-width: 700px) {
    h1 {
        font-size: 36px;
        padding: 10px 10px;
    }
    h3 {
        font-size: 22px;
    }
    h4 {
        font-size: 20px;
    }
    .hd-study {
        font-size: 16px
    }
    body, li {
        font-size: 14px;
    }
    p {
        margin-bottom: 0.5rem;
    }
}