Optimizing css for a media query

Question

Good morning,

I have created a media query for my website. I have the feeling that it is slowing down my website, because it is not optimized. On mobile phones, I have a specific image. For tablets and desktops I have another image to be shown. The media query I have works just fine. But it is not optimized. Can anyone help me to get it optimized?

this is the query:

body, html {
    height : 100%;
    width: 100%;
    margin:0;
}

@media only screen and (min-width: 320px)  {

.Frontpage-image {
    background-image: url("https://dit.be/wp-content/uploads/2021/01/mobiel-01.svg");
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    height: 100vh;
}
}
@media only screen and (min-device-width: 481px) and (max-device-width: 1024px) and (orientation:landscape) {
    .Frontpage-image {
        background-image:url("https://dit.be/wp-content/uploads/2021/01/desktop-01.svg");
        background-repeat: no-repeat;
        background-position: center center;
        background-size: cover;
        height:100vh;
    }
}
    

@media screen and (min-width: 768px) {
    .Frontpage-image{
        background-image:url("https://dit.be/wp-content/uploads/2021/01/desktop-01.svg");
        background-repeat: no-repeat;
        background-position: center center;
        background-size: cover;
        height: 100vh;
    }
}
@media screen and (min-width: 1025px) {
    .Frontpage-image {
        background-image:url("https://dit.be/wp-content/uploads/2021/01/desktop-01.svg");
        background-repeat: no-repeat;
        background-position: center center;
        background-size: cover;
        height:100vh;
    }
}

Answer 1

Please use this CSS code.
In media query, styles defined outside of query is inherited.
So my code works exactly like yours, but the code has been greatly reduced.

body, html {
    height : 100%;
    width: 100%;
    margin:0;
}
.Frontpage-image {
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    height: 100vh;
}

@media only screen and (min-width: 320px)  {

.Frontpage-image {
    background-image: url("https://dit.be/wp-content/uploads/2021/01/mobiel-01.svg");
}
}
@media only screen and (min-device-width: 481px) and (max-device-width: 1024px) and (orientation:landscape) {
    .Frontpage-image {
        background-image:url("https://dit.be/wp-content/uploads/2021/01/desktop-01.svg");
    }
}
    

@media screen and (min-width: 768px) {
    .Frontpage-image{
        background-image:url("https://dit.be/wp-content/uploads/2021/01/desktop-01.svg");
    }
}
@media screen and (min-width: 1025px) {
    .Frontpage-image {
        background-image:url("https://dit.be/wp-content/uploads/2021/01/desktop-01.svg");
    }
}

You can check this answer.