Подключал через библиотеку гугла. Ставил и значения в цифрах, и "bold" - 0 реакции.
<link href="https://fonts.googleapis.com/css?family=Open+Sans:400,600&display=swap" rel="stylesheet">
body {
font-size: 10px;
font-family: 'Open Sans', sans-serif;
background: #000000;
}
.nav {
width: 1720px;
display: flex;
margin: 80px auto 0 auto;
flex-flow: row nowrap;
}
.logo {
width: 287px;
height: 28px;
background-image: url(../images/logo.png);
background-repeat: no-repeat;
}
.razdelitel {
margin-left:35px;
width: 1px;
height: 28px;
background-color: #5b5b5b;
}
.be {
margin-top: 6px;
margin-left: 35px;
width: 21px;
height: 16px;
background-image: url(../images/be.png);
background-repeat: no-repeat;
}
.be:hover {
transition: 1s;
margin-top: 6px;
margin-left: 35px;
width: 21px;
height: 16px;
background-image: url(../images/behover.png);
background-repeat: no-repeat;
}
.insta {
margin-top: 6px;
margin-left: 15px;
width: 16px;
height: 16px;
background-image: url(../images/insta.png);
background-repeat: no-repeat;
}
.insta:hover {
transition: 1s;
margin-top: 6px;
margin-left: 15px;
width: 16px;
height: 16px;
background-image: url(../images/instahover.png);
background-repeat: no-repeat;
}
.vk {
margin-top: 6px;
margin-left: 15px;
width: 21px;
height: 16px;
background-image: url(../images/vk.png);
background-repeat: no-repeat;
}
.vk:hover {
transition: 1s;
margin-top: 6px;
margin-left: 15px;
width: 21px;
height: 16px;
background-image: url(../images/vkhover.png);
background-repeat: no-repeat;
}
.mail {
margin-top: 6px;
margin-left: 960px;
width: 20px;
height: 16px;
background-image: url(../images/mail.png);
background-repeat: no-repeat;
}
.mail:hover {
margin-top: 6px;
margin-left: 960px;
width: 20px;
height: 16px;
background-image: url(../images/mailhover.png);
background-repeat: no-repeat;
}
a {
font-family: 'Open Sans',sans-serif;
font-weight: bolder;
display: inline-block;
padding-top: 2px;
padding-left: 25px;
text-decoration: none;
color: #5b5b5b;
}
a:hover {
color: #ff1e4f;
}