index1.css

* {
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

 :root {
    --white: #ffffff;
    --gray: #a59b9b;
    --primary: #1da1f2;
    --black: #000000;
    --border: 1px solid #ebebeb;
}

.container {
    display: flex;
    flex-direction: row;
}

header {
    width: 317px;
    height: 625px;
    position: sticky;
    top: 0;
    background-color: var(--white);
    font-weight: 700;
    font-size: 19px;
    border-left: 1px solid;
    overflow: auto;
}

header .header-nav {
    margin-left: 53px;
}

header .header-nav ul {
    list-style: none;
}

header .header-nav ul li {
    padding: 12px;
}

header .header-nav ul li a {
    text-decoration: none;
    color: var(--black);
    text-transform: capitalize;
}

header .header-nav ul li a i {
    font-size: 19px;
    line-height: 22.67px;
    color: var(--black);
}

header .header-nav ul li a i[class*=fa-home] {
    color: var(--primary);
}

header .header-nav ul li .active {
    color: var(--primary);
}

header .header-nav ul li a:hover {
    background-color: #e8f5fe;
    color: var(--primary);
    padding: 12px;
    border-radius: 53px;
    transition: background-color .5s linear;
}

header .header-nav ul li a:hover i {
    color: var(--primary);
}

header .header-nav ul li a:hover i[class*=fa-ellipsis-h] {
    border: 1px solid var(--primary);
}

header .header-nav ul a i[class*="fa-twitter"] {
    font-size: 28px;
    color: var(--primary);
}

header .header-nav ul a span {
    margin-left: 19px;
}

header .header-nav ul a i[class*=fa-ellipsis-h] {
    border: 1px solid var(--black);
    border-radius: 50%;
    padding-left: 3px;
    padding-right: 3px;
}

header .header-nav .button {
    width: 85%;
    background-color: var(--primary);
    color: var(--white);
    border: none;
    padding: 15px 32px;
    text-align: center;
    text-transform: capitalize;
    font-size: 15px;
    border-radius: 55px;
    line-height: 1.3125;
    cursor: pointer;
    margin-top: 12px;
}

header .profile-name {
    width: 235px;
    height: 60px;
    margin-top: 28px;
    margin-left: 65px;
    font-size: 15px;
}

header .profile-name i {
    font-size: 25px;
    border: 1px solid gray;
    background-color: gray;
    border-radius: 50%;
    padding: 10px;
}

header .profile-name span {
    margin-left: 15px;
}


/* end header*/


/* start main */

main {
    width: 600px;
    height: 100vh;
    border: 1px solid #ebebeb;
    border-top: none;
}

main .header {
    height: 53px;
    border: 1px solid #ebebeb;
    display: flex;
    justify-content: left;
    align-items: center;
}

main .tweet-form {
    width: 100%;
    display: flex;
    flex-direction: column;
}

main .tweet-form .tweet-cont {
    margin-top: 10px;
    height: 153px;
    border: 1px solid #ebebeb;
    width: 100%;
    box-shadow: 0 4px 8px 0 rgba(236, 231, 231, 0), 0 6px 20px 0 rgba(202, 200, 200, 0.19);
}

main .tweet-form .tweet-cont .tweet {
    display: flex;
    flex-direction: row;
    justify-content: left;
    align-content: center;
    margin-top: 12px;
}

main .tweet-form .tweet-cont .tweet i {
    font-size: 38px;
    background-color: #b2bac0;
    color: #5a6976;
    padding: 8px;
    border-radius: 50%;
    margin-left: 10px;
}

main .tweet-form .tweet-cont .tweet textarea {
    min-height: 65px;
    width: 464px;
    resize: none;
    border: none;
    border-bottom: 1px solid #ebebeb;
    margin-left: 10px;
    font-size: 19px;
    color: #0f1419;
}

main .tweet-form .tweet-cont .tweet textarea:focus {
    outline: none;
}

main .tweet-form .tweet-cont .submit-btn {
    display: inline-block;
    background-color: var(--primary);
    padding: 10px 15px;
    font-size: 15px;
    text-transform: capitalize;
    align-items: center;
    color: var(--white);
    font-weight: 700;
    border-radius: 55px;
    margin-left: 500px;
    margin-top: 6px;
    cursor: pointer;
    border: none;
}

main .tweet-form .tweet-cont .submit-btn:disabled {
    cursor: none;
    background-color: #8ed0f9;
}

main .tweet-form .tweet-cont .submit-btn:focus {
    outline: none;
}

.styleFont {
    font-size: 19px;
    font-weight: 700;
    margin-left: 10px;
    text-transform: capitalize;
}


/* style newtweet*/

main .newTweet {
    width: 100%;
    min-height: 150px;
    background-color: var(--white);
    border: var(--border);
    margin-top: 10px;
    box-shadow: 0 4px 8px 0 rgba(236, 231, 231, 0), 0 6px 20px 0 rgba(202, 200, 200, 0.19);
}

main .newTweet .tname {
    font-size: 19px;
    font-weight: 700;
    margin-left: 10px;
    text-transform: capitalize;
}

main .newTweet .tweetItSelf {
    min-height: 88px;
    font-size: 19px;
    margin-left: 10px;
    word-wrap: break-word;
    margin-bottom: 10px;
}

main .newTweet .tweetBtn {
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
    border-top: var(--border);
    padding: 5px;
}

main .newTweet .tweetBtn i {
    color: #908b8b;
    padding: 5px;
}

main .newTweet .tweetBtn .tBtn i:hover {
    color: var(--primary);
    background-color: #9bf6ff;
    border-radius: 50%;
}


/*  chnge like button when click */

.likebtnclick {
    color: rgba(163, 19, 19, 0.897) !important;
    background-color: #9bf6ff;
    border-radius: 50%;
}