@Alexander:
1. You can add the following css in “Appearance => Theme Options => Custom CSS” box to hide entry meta in Homepage and category pages:
.home .entry-meta, .archive .entry-meta { display: none; }
Then to reduce the space between title and excerpt content, you can add the following css:
.home #content .entry-title, .archive #content .entry-title { padding-bottom: 0; }
Then if you further want to reduce it then you can change the padding top in the following css and add it Custom CSS box:
.entry-summary { padding-top: 20px; `}
2. You can add the following css in “Appearance => Theme Options => Custom CSS” box
#main-slider img { width: 100%; }
3. For that, you can add the following css in “Appearance => Theme Options => Custom CSS” box:
.page-title { font-size: 30px; line-height: 1.3em; }
@media screen and (max-width: 940px) {
.page-title {
font-size: 24px;
line-height: 1.2;
}
}
@media screen and (max-width: 640px) {
.page-title {
font-size: 20px;
}
}