@import url('https://fonts.googleapis.com/css2?family=Dosis:wght@600&display=swap');
* {
    padding: 0;
    margin: 0;
    font-family: 'Dosis', sans-serif;
    box-sizing: content-box;
}
li {
    text-decoration: none;
    color: #1F57A1;
}
ol {
    display: inline;
    padding: 1%;
}
#nav_panel {
    position: sticky;
    top: 0%;
}
.nav_link{
    text-decoration: none;
    color: #000;
}
.nav_link:hover {
    color: #1F57A1;
    transition: 0.5s;
}
body {
    background-color: #F7F7F7;
}
header {
    box-sizing: border-box;
    background-color: #fff;
    text-align: center;
    width: 100%;
    height: 65px;
    border: #DBDEE4 solid 1px;
}
nav {
    padding-top: 1%;
}
.nav_bar {
    text-decoration: none;
}
.logo {
    text-align: center;
}
aside {
    padding-top: 2%;
}
#block_1 {
    background-color: #fff;
    float: left;
    width: 10%;
    height: 150px;
    padding: 2%;
    margin: 1%;
    border-radius: 5px;
    border: #DBDEE4 solid 1px;
    
}
.aside_link {
    color: #000;
    text-decoration: none;
}
.aside_link:hover {
    color: #1F57A1;
    text-decoration: underline;
    
}
.selected {
    color: #1F57A1;
}
.bar_link {
    color: #000;
    text-decoration: none;
}
.bar_link:hover {
    color: #1F57A1;
    text-decoration: underline;
}
/*=Content block=*/
article {
    float: left;
    padding: 2%;
    margin: 1%;
    border-radius: 5px;
    border: #DBDEE4 solid 1px;
    background-color: #fff;
    width: 60%;
    height: 220px;
}
.content_link {
    color: #1F57A1;
    text-decoration: none;
}
.link_back {
    color: #000;
    text-decoration: none;
}
.link_back:hover {
    color: #1F57A1;
    text-decoration: underline;
    transition: 0.2s;
}
/*list-style-type: none;*/
.month_block {
    width: 100%;
    padding-top: 2%;
}
.month_list {
    list-style-type: none;

}
.month_link {
    text-decoration: none;
}
.month_button {
    display: inline-block;
    padding: 1%;
    margin: 1%;
    border: #DBDEE4 solid 1px;
    border-radius: 5px;
    text-align: center;
    width: 6%;
}
.month_button:hover {
    display: inline-block;
    padding: 1%;
    margin: 1%;
    border: #DBDEE4 solid 1px;
    border-radius: 5px;
    background-color: #1F57A1;
    color: #fff;
    transition: 0.2s;
}