style.css

body {
    background: #ccc;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 95vh;
    flex-direction: column;
}

.info-body {
    background: #ccc;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.tag{
    width: 100%;
    background: #337ab7;
    padding: 10px;
    height: 50px;
    margin: 10px;
    text-align: center;
    float: left;
    white-space: nowrap;
    border-radius: .25em;
    line-height: 25px;
}

.tag:hover{
    cursor: pointer;
}

* {
    font-family: 'Open Sans',Verdana,sans-serif;
    box-sizing: border-box;
    font-weight: bold;
}

input {
    border: 2px solid #ffffff;
    padding: 10px;
    margin: 10px auto;
}

button {
    padding: 10px 15px;
    background: #ffffff;
    margin-right: 10px;
    border: 2px solid #ffffff;
    display: inline;
}

.main{
    width: 450px;
    height: 500px;
    background: #ebebeb;
    float: left;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.video{
    width: 90%;
    background: #ebebeb;
    border-radius: 10px;
    display: flex;
    margin-top: 50px;
    margin-bottom: 25px;
    padding: 10px;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.result{
    width: 90%;
    background: #ebebeb;
    border-radius: 10px;
    display: flex;
    margin-top: 50px;
    margin-bottom: 25px;
    padding: 10px;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

textarea{
    width: 70%;
    height: 200px;
}

.tags-copy{
    width: 90%;
    background: #ebebeb;
    border-radius: 10px;
    display: flex;
    margin-top: 50px;
    margin-bottom: 25px;
    padding: 10px;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.tags{
    width: 90%;
    background: #ebebeb;
    margin-top: 50px;
    border-radius: 10px;
    margin-bottom: 25px;
    display: flex;
    padding: 10px;
    overflow-x: auto;
    overflow-y: hidden;
}

@media screen and (max-width: 600px) {
    .tags, .result, .video, .tags-copy{
        margin-bottom: 15px;
        margin-top: 25px;
    }

    h1{
        font-size: 25px;
    }
}

img{
    width: 90%;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555; 
}