#participate_1 {
    background-image: 
    linear-gradient(180deg, rgba(2,0,36,0.37047173566878977) 0%, rgba(0,0,0,0.8195163216560509) 100%), 
    url("../images/participate/participate_1.png");
}

#participate_2 {
    background-image: 
    linear-gradient(180deg, rgba(2,0,36,0.37047173566878977) 0%, rgba(0,0,0,0.8195163216560509) 100%), 
    url("../images/participate/participate_2.png");
}

#participate_3 {
    background-image: 
    linear-gradient(180deg, rgba(2,0,36,0.37047173566878977) 0%, rgba(0,0,0,0.8195163216560509) 100%), 
    url("../images/participate/participate_3.png");
}

#participate_4 {
    background-image: 
    linear-gradient(180deg, rgba(2,0,36,0.37047173566878977) 0%, rgba(0,0,0,0.8195163216560509) 100%), 
    url("../images/participate/participate_4.png");
}