.header {
    margin-bottom: 25px;
    background-color: hsla(209, 80%, 88%, 0.656);
}
.khoshamad {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    text-align: center;
    margin-top: 0px;
}

.headernav {
    display: grid;
    grid-template-columns: repeat(13, 1fr);
    text-align: center;
}
.newsbax {
    border: 2px solid red;
    border-radius: 5px;
}
.mainstr {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    grid-template-rows: ;
    gap: 18px;
}
.newsimg {
    width: 250px;
    height: 100px;
}
.footer {
    position: fixed;
    bottom: 0px;
    left: 0px;
    right: 0px;
    width: 100%;
    background-color: hsla(209, 80%, 88%, 0.656);
}
.textnews {
    text-align: left;
}