main.css

body {
    font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
    background-color: #e6ecf0;
    margin: 0;
}

#twitter {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.tweet {
    display: flex;
    background-color: #fff;
    width: 65%;
    max-width: 900px;
    min-height: 110px;
    padding: 10px 20px;
    border-bottom: 1px solid #e6ecf0;
    margin: 0 auto;
}

header {
    width: 100%;
    height: 57px;
    line-height: 55px;
    margin-bottom: 32px;
    background: #fff;
    border-bottom: 1px solid #e5eff5;
}

header .inner {
    max-width: 65%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.headerSection {
    width: 33%;
    text-align: center;
}

.headerSection:first-child {
    display: flex;
    justify-content: center;
}

header .link {
    color: #1da1f2;
    width: 50px;
    border-bottom: 2px solid #1c94e0;
    text-decoration: unset;
    display: block;
    font-weight: bold;
    padding: 0 15px;
}

.search {
    align-self: center;
    width: 200px;
    height: 35px;
    padding: 10px;
    background-color: #f5f8fa;
    border-radius: 21px;
    border: 1px solid #e6ecf0;
    box-sizing: border-box;
    color: #14171a;
    outline: 0;
}

.tweetLink {
    background-color: #1da1f2;
    border: 1px solid #1da1f2;
    color: #fff;
    text-decoration: none;
    border-radius: 100px;
    padding: 6px 16px;
    margin-left: 15px;
}

.tweetLink:hover {
    background-color: #006dbf;
    border-color: #006dbf;
}