@media screen and (max-width: 900px) {
    body{
        margin: 0;
        padding: 0;
        font-family: sans-serif;
        font-size: large;
        background-color: #e0e0e0;
    }
    .header{
        text-align: center;
    }
    input{
        font-family: sans-serif;
        font-size: large;
    }
    table {
        width: 100%;
        border: 1px solid gray;
        border-collapse: collapse;
    }
    th {
        width: content-box;
        border: 1px solid gray;
    }
    td {
        border: 1px solid gray;
        word-break: break-all;
    }
    .warning {
        color: #d30000;
    }
    #invisible_on_small_screen {
        display: none;
    }
    .weatherimg{
        width: 60px;
        height: 60px;
        margin: 0;
        margin-bottom: -15px;
        padding: 0;
        /*border: 1px black solid;*/
    }
}

@media screen and (min-width: 901px) {
    .invisible_on_big_screen {
        display: none;
    }

    body {
        margin: 0;
        padding-top: 0;
        padding-bottom: 0;
        padding-left: 15%;
        padding-right: 15%;
        font-family: sans-serif;
        font-size: medium;
        background-color: #515151;
    }

    input {
        font-family: sans-serif;
        font-size: medium;
    }

    .main {
        margin: 0;
        padding: 0;
        background-color: #e0e0e0;
    }

    .head_title {
        text-align: center;
        max-width: 100%;
    }

    .nav {
        max-width: 100%;
        text-align: center;
    }

    a.anav:link, a.anav:active, a.anav:visited, a.anav:hover {
        color: white;
        text-decoration: none;
    }

    .content {
        min-height: 300px;
        padding: 10px;
        background-color: #e0e0e0;
    }

    .warning {
        color: #d30000;
    }

    table {
        width: 100%;
        border: 1px solid gray;
        border-collapse: collapse;
    }

    th {
        width: content-box;
        border: 1px solid gray;
    }

    td {
        border: 1px solid gray;
    }
    .weatherimg{
        width: 60px;
        height: 60px;
        margin: 0;
        margin-bottom: -15px;
        padding: 0;
        /*border: 1px black solid;*/
    }
}

.header {
    margin: 0;
    padding-bottom: 10px;
    padding-top: 5px;
    width: 100%;
    background-color: #727cb6;
    color: white;
    }
.main {
    margin: 0;
    padding: 0;
    padding-bottom: 50px;
    background-color: #e0e0e0;
}
a.anav:link, a.anav:active, a.anav:visited, a.anav:hover {
    color: white;
    text-decoration: none;
}
a#guest_book_control_link {
    pointer-events: none; /* ссылка не доступна для нажатия */
}
.content {
    padding-left: 5px;
    padding-right: 5px;
    text-align: center;
}
#mist_mess {
    text-align: center;
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-content: space-around;
    flex-wrap: wrap;
}
#mistcontainer {
    text-align: center;
    display: flex;
    flex-direction: row;
    justify-content: center;
    /*align-content: space-around;*/
    /*flex-wrap: wrap;*/
}

#mistin {
    display: flex;
    flex-direction: row;
    justify-content: center;
    /*margin: auto;*/
}

.warning {
        color: #d30000;
    }

table {
    width: 100%;
    border: 1px solid gray;
    border-collapse: collapse;
}
th {
    width: content-box;
    border: 1px solid gray;
}

td {
    border: 1px solid gray;
}
h1 {
    text-align: center;
}
h2 {
    text-align: center;
}

textarea {
    width: 90%;
    height: 100px;
    resize: none;
}