*,
*::before,
*::after {
    padding: 0;
    margin: 0;
    border: 0;
    -webkit-box-sizing: 0;
    box-sizing: border-box;
}
html,
body {
    background-color: rgba(220, 221, 221, 0.2);             /* Фон */
    block-size: 100%;
    position: relative;
}
.header {
    position: fixed;
    width: 100%;
    height: 90px;
    top: 0;
    left: 0;
    background-color: rgba(0,0,0,1);
}
.header__container {
    width: 100%;
    max-width: 1500px;
    margin: 0 auto;
    padding-top: 15px;
    padding-left: 15px;
    padding-right: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-sizing: border-box;
}
.body.lock {
    overflow: hidden;
}
.logo_img {
    display: block;
    width: 250px;
    height: 60px;
    background-image: url(../img/logo.png);
}
.btn_user {
    background-color: black;
	width: 100%;
    margin: 8px;
    padding: 5px;
    color: white;
    border-radius: 5px;
}
.btn_user:hover {
    text-decoration: underline;
}
.btn_user:active {
    color: rgba(255, 182, 46, 0.699);
}

#greeting {
    animation: greeting 2s ease 0s
}

@keyframes greeting {
    0% {
           opacity: 0;
    }
    100% {
           opacity: 1;
    }

}