common.css

* {
    font-family: 'Poppins', sans-serif;

    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    margin: 0;

    /* box-sizing: border-box; */
}

html,
body{
    margin: 0;
    padding: 0;
    scroll-behavior: smooth;
    overflow-x: hidden;
    scroll-padding-top: 51px;
}

html::-webkit-scrollbar{
    top: 20px;
    width: 11px;
}

html::-webkit-scrollbar-thumb {
    background-color: #2e3131;
    border-radius: 20px;
    border: 3px solid #fff;
    background-clip: content-box;
}

html::-webkit-scrollbar-track {
    background-color: transparent;
}

body{
    background-image: url('images/qwert.jpg');
    background-size:cover;
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
}

hr {
    height: 2.5px;
    background-color: var(--persian-green);
    border: none;
    border-radius: 100px;
    margin: 20px auto;
    width: 250px;
    position: relative;
}

/**************** button ****************/
.button-for-all {
    border: none;
    background-color: var(--primary-black);
    color: var(--primary-white);
    padding: 10px 20px;
    font-size: 16px;
    border-radius: 0;
    cursor: pointer;
    transition: all 0.3s ease, background-color 0.3s ease;
}

.button-for-all a {
    color: var(--primary-white);
}

.button-for-all:hover {
    background-color: var(--persian-green);
    border-radius: 50px;
}

.button-for-all:active {
    transform: scale(0.95);
}

.button-for-all span {
    vertical-align: middle;
    display: inline-block;
    transition: all 0.3s ease;
}

.button-for-all:hover span {
    animation: vanish 0.5s forwards;
}
/**************** button ****************/