.marker_lightyellow {
background: linear-gradient(transparent 70%, #ffff66 70%);
}
 
.marker_lightgreen {
background: linear-gradient(transparent 70%, #90EE90 70%);
}
 
.marker_lightskyblue {
background: linear-gradient(transparent 70%, #87CEFA 70%);
}
 
.marker_lightsalmon {
background: linear-gradient(transparent 70%, #FFA07A 70%);
}