Pro tmavé pozadí:
#sp-main-body .container {
background-color: rgba(255, 255, 255, 0.7) !important;
padding: 20px !important;
border-radius: 0 !important;
}
Pro světlé pozadí:
#sp-main-body .container {
background-color: rgba(0, 0, 0, 0.7) !important;
padding: 20px !important;
border-radius: 0 !important;
} 